LC877264A Datasheet, PDF (8/24 Pages) Sanyo Semicon Device – 8-Bit Single Chip Microcontroller with 64/56/48 KB ROM and 2048-Byte RAM On Chip

Pin Assignment
LC877264A/56A/48A
Pin name I/O
Function
VSS1
VSS2
VSS3
- • Power supply (-)
VDD1
VDD2
VDD3
- • Power supply (+)
PORT0
I/O • 8bit input/output port
P00 to P07
• Data direction programmable in nibble units
• Use of pull-up resistor can be specified in nibble units
• Input for HOLD release
• Input for port 0 interrupt
Option
No
No
Yes
PORT1
I/O • 8bit input/output port
Yes
P10 to P17
• Data direction programmable for each bit
• Use of pull-up resistor can be specified for each bit individually
• Other pin functions
P10 SIO0 data output
P11 SIO0 data input or bus input/output
P12 SIO0 clock input/output
P13 SIO1 data output
P14 SIO1 data input or bus input/output
P15 SIO1 clock input/output
P16: Timer 1 PWML output
P17: Timer 1 PWMH output/Buzzer output
PORT3
I/O • 6bit Input/output port
Yes
P30 to P35
• Data direction can be specified for each bit
• Use of pull-up resistor can be specified for each bit individually
PORT7
I/O • 4bit Input/output port
No
P70 to P73
• Data direction can be specified for each bit
• Use of pull-up resistor can be specified for each bit individually
• Other functions
P70: INT0 input/HOLD release input/Timer0L capture input/output for watchdog
timer
P71: INT1 input/HOLD release input/Timer0H capture input
P72: INT2 input/HOLD release input/timer 0 event input/Timer0L capture input
P73: INT3 input(noise rejection filter attached)/timer 0 event input/Timer0H capture
input
AD input port: AN8(P70), AN9(P71)
• Interrupt detection selection
Rising
Rising and
Falling
H level
falling
L level
INT0
Yes
Yes
No
Yes
Yes
INT1
Yes
Yes
No
Yes
Yes
INT2
Yes
Yes
Yes
No
No
INT3
Yes
Yes
Yes
No
No
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